Fitting Types by APPLICATION
(or purpose):


Union	Adapter
Ports are the same size Ports are the same type One Port may be male and the other female	Ports are not the same type Ports may be male or female

Reducer	Bulkhead
One Port is smaller than the other(s) All ports are the same type Ports may be male or female	Union, Reducer or Adapter Used to go through and attach to a bulkhead Attached with a jam nut

Aerofit